Question

Question #9493a

Answer 1

Agree with your answer.

Explanation:

The only parts which do score `10` points are the green areas.

Therefore to not score `10` your dart would have to hit anywhere else.

The entire area of the board is `12 xx12 = 144 " inch"^2`

The green areas can be calculated:

`6xx6 - pi(3)^2 = 36-9pi`

`7.725666 " inch"^2`

The area which does not score `10` points is:

`144-7.725666 = 136.27433 " inch"^2`

`:. P(not 10) = 136.27433/144`

`0.946`